Model

Claude Opus 5.5

Anthropic's Opus model, tuned for coding and agents.

What happened around it

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Last 8 weeks Mixed with a starting picture from public reviews and forums. It fades as more people write.

was impressed byfor codinghas a great new versionswitched totried outcosts too muchdoes it better than what I usedfor writing

Get started: Official site ↗ · Release notes ↗
Other models by Anthropic: Claude Fable 5.1 Claude Sonnet 5 Claude Sonnet 5.5
Apps by Anthropic: Claude app Claude Code
Apps from other companies that use Anthropic models: Granola Lovable Microsoft Copilot